Nice work, and good write-up!
Yes, getting that last 5-15% could be a full-time job. Especially the hood. The more you look, the more imperfections you can spot. The nice thing about DIY is the ability to do a little touch up in a few months if you find a spot that really bugs you.
It's funny, when you do a correction on a black car, you will find yourself looking at other black cars on the road and seeing just how bad their paint looks in full sun